(19)

(11)

EP 2 186 112 A2

(12)

(88) Date of publication A3: 12.11.2009 (43) Date of publication: 19.05.2010 Bulletin 2010/20 (21) Application number: 08776021.1 (22) Date of filing: 21.07.2008

(51) International Patent Classification (IPC):  H01J 49/26(2006.01) H01J 49/40(2006.01) (86) International application number: PCT/GB2008/002501 (87) International publication number: WO 2009/013481 (29.01.2009 Gazette 2009/05)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 21.07.2007 GB 0714301 (71) Applicant: Ionoptika Limited Hants SO53 4NF (GB)	(72) Inventors: HILL, Rowland Bucks SL9 9DT (GB) BLENKINSOPP, Paul, William, Miles Southampton, Hants SO18 6TL (GB) (74) Representative: Bibby, William Mark et al Mathisen, Macara & Co 120 Bridge Road Chertsey Surrey KT16 8LA 120 Bridge Road Chertsey Surrey KT16 8LA (GB)